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Math Help - Can you help me minimise this function?

  1. #1
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    Can you help me minimise this function?

    Can someone please help me out here with an equation I need to minimise? My efforts don't seem to be correct when I plot em in excel. Thanks all and apologies for the lack of Latex use.

    v = 1/(cos(x) + c.sin(x))

    .... where c is a constant.
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  2. #2
    MHF Contributor Calculus26's Avatar
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    f ' =[ sin(x)-ccos(x)]/[(cos(x)+csin(x))^2]


    f ' = 0 when sin(x)-ccos(x) = 0

    tan(x) = c

    x = arctan(c) + 2pi
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  3. #3
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    Great stuff. Thanks!

    B
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